Here, we study the transition form factors, \(B_{d}\rightarrow K^{\ast }\)  and \(B_{s}\rightarrow \phi \) , using Ward identities to compute their values at \(q^2=0\) 
and then extrapolate them in a general vector meson dominance model to larger \(q^2\)  values. We compare these form factors with
those obtained in Refs. [1]}, [2]}, [3]}. In addition, for the decay \(B_{d}\rightarrow K^{\ast }\mu ^{+}\mu ^{-}\) , we also compare
the transition form factors with the results of a DSE model of QCD [4]}.
